/Engine/Source/Runtime/ApplicationCore/Public/GenericPlatform/ITextInputMethodSystem.h
Activates the provided context. Editable text should call this method when keyboard focus is received.
void ActivateContext ( const [TSharedRef](API\Runtime\Core\Templates\TSharedRef)< [ITextInputMethodContext](API\Runtime\ApplicationCore\GenericPlatform\ITextInputMethodContext) > & Context )